Two-loop corrections to the decay rate of parapositronium

Details Two-loop corrections to the decay rate of parapositronium Two-loop corrections to the decay rate of parapositronium

2003-05-22

arxiv.org/abs/hep-ph/0305251v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, 7 figures

Scientific paper

10.1103/PhysRevA.68.032512

Order $\alpha^2$ corrections to the decay rate of parapositronium are calculated. A QED scattering calculation of the amplitude for electron-positron annihilation into two photons at threshold is combined with the technique of effective field theory to determine an NRQED Hamiltonian, which is then used in a bound state calculation to determine the decay rate. Our result for the two-loop correction is $5.1243(33)$ in units of $(\alpha/\pi)^2$ times the lowest order rate. This is consistent with but more precise than the result $5.1(3)$ of a previous calculation.

Affiliated with

Also associated with

No associations

Rating

Two-loop corrections to the decay rate of parapositronium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Two-loop corrections to the decay rate of parapositronium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-loop corrections to the decay rate of parapositronium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-41177